Why We Must Reject All Postconciliar Claims to a "New Understanding" of Dogma

13. For the doctrine of the faith which God has revealed is put forward not as some philosophical discovery capable of being perfected by human intelligence, but as a divine deposit committed to the spouse of Christ to be faithfully protected and infallibly promulgated.

14. Hence, too, that meaning of the sacred dogmas is ever to be maintained which has once been declared by Holy mother Church, and there must never be any abandonment of this sense under the pretext or in the name of a more profound understanding.

May understanding, knowledge and wisdom increase as ages and centuries roll along, and greatly and vigorously flourish, in each and all, in the individual and the whole Church: but this only in its own proper kind, that is to say, in the same doctrine, the same sense, and the same understanding [n. 36: St. Vincent of Lerins, Commonitorium (Notebook), 28 (PL 50, 668)].

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Canons:

3. If anyone says that it is possible that at some time, given the advancement of knowledge, a sense may be assigned to the dogmas propounded by the Church which is different from that which the Church has understood and understands: let him be anathema.

And so in the performance of our supreme pastoral office, we beseech for the love of Jesus Christ and we command, by the authority of him who is also our God and savior, all faithful Christians, especially those in authority or who have the duty of teaching, that they contribute their zeal and labor to the warding off and elimination of these errors from the Church and to the spreading of the light of the pure faith.

But since it is not enough to avoid the contamination of heresy unless those errors are carefully shunned which approach it in greater or less degree, we warn all of their duty to observe the constitutions and decrees in which such wrong opinions, though not expressly mentioned in this document, have been banned and forbidden by this Holy See.